Finding the Fourth Proportional to 81,120.48, 121,682.60 and 27,812.01
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Solution
The fourth proportional to 81,120.48, 121,682.60 and 27,812.01 is: 41,718.66
Step by Step Solution
- Step 1: Write the proportion equation
81,120.48 : 121,682.60 = 27,812.01 : x - Step 2: Convert to fraction form
81,120.48/121,682.60 = 27,812.01/x - Step 3: Cross multiply
81,120.48x = 121,682.60 × 27,812.01 - Step 4: Simplify right side
81,120.48x = 3,384,237,688.03 - Step 5: Solve for x
x = 3,384,237,688.03/81,120.48 - Step 6: Final answer
x = 41,718.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.